[WikiEN-l] General versus specific names/scope for articles

[brewhaha%40edmc.net]

In this matter of choice, I avoid jeneral terms when I can. For example, I 
rarely write "algae", because that could refer to moss that has a solid 
substrate or dissolved phytoplankton. The practical difference is that 
plankton can grow (and consume oxygen in decomposition) a lot faster than 
moss. Other writers figure that they want to, and can safely get rid of, 
both, so they lump it altogether in "algae", a word that I avoid.

Is no combusion external to an enjin? Or, external combusion is incidental 
to light enjinz like rockets and afterburning turbines. Does having the fire 
enclosed in solids for the vast majority of the burn make it internal 
combustion? I think that is a popular understanding that excludes rockets 
and turbines.